Warping-machine.



Y L. A. AUMANN.

WARPING MACHINE. APPLICATION FILED MAYI3.191-5.

Patented Mar. 6, 1917.:

with/asses.

6F F Ta? 115%.

To all wkont it may concern:

ST S P LonIsn. AUMANN, or cnrcornn, massacnusn'rrs, ,nssxenon, BY MESN'YE ASSIGN- MENTS, ro nnarnn CORPORATION, or HOPEDALE, MASSACHUSETTS, A conrona- TION F MAINE.

Application filed May 13,1915. Serial no; 27,931.

Be it known that I, LOUIS A. AUMANN, a citizen of the United States, residing at Y .Chicopee, county of Hampden, and State be subsequently treated used to occur resulting in inaccuracy of;

of Massachusetts,; have invented an Improvement in Warping-Machines, of which.

the following description, in connection with the accompanying drawings, is a speci-' fication, like letters on the drawingsrepresenting like parts. 1

The invention .hereinafterfldesciibed relates to warping machinesfor'winding upon a'beam or drum a series of: arp tb for weaving.

For economic an the beam a predetemii or warp, and to this on war,

determined length of ;yarn wound on the beam, have caused stopping mechanism to be operated to stop the machine. -f Such measuring devices have been operated from a small roll at the top. portion ofthe machine over which the warp-fthreads'. pass, but under these conditions some slip ment. 'Other measuring devices hayefbeen operated from the warp beam drivingfroll, but as the beam loadflgradually increaseduring the winding opera'ion of the 'warp a threads thereon, there is found to beca relative slip betweenthe driving surface of the driving roll and the surface, of the threads wound onthe beam. This slip is liable to occur at any time especially as the beam and its load gradually increase in weight, due to the --consequently greater frictional driving power required between the surface of the driving roll and thread load to turn the beam, but is particularly noticeable when stopping to piece broken ends. and starting up again, so that there will be a discrepancy between the length of warp indicated by the measuring device and that actually wound upon the beam at the conclusion of the warping operation.

With these generally-stated factsin mind, the aims andfpur'poses of the present invention are to provide means whereby the measured length of warp on the warp beam as denoted by the measuringdevice shall -be thesame as that actually wound upon the;

Specification of Zetters Patent.

ping-machines. have heretofore been provided with-ineasur-i ing devices, which, upon registering a 'pre-' ingthe driving surface of the warp beam' WARPING-MACHINE.

Patented Mar. 6, 191 7.

on the beam,so that a substantially positivedrivingengagement exists between the surfaces of the driving roll and the wound mass ofthread on the beam, and operating the measurmg device through connections with the driving roll, the result being that at the end of thewarping operation the actual length of warp wound upon the beam will be the sameas that indicated by the measuring device.

In the drawings Figure glis a side elevation of'one type of-- warping machine having the present invention associated therewith;

- Fig; 2 is an enlarged sectional detail showdriving'roll-and its action upon the surface of the warp wound' upon the beam;

Fig. 3-is a front elevation of the driving roll showing the character of the driving surface.

The machine frame-.may be of any usual or desired construction, and as shown comprises the side frames 1 rising from suitable base supports 2 and connected by appropriate cross-ties, as will be readily-understood; -Mounted on the side frame 1 is'a rock shaft 3 from which rises the rocker arm pawlfi adapted to engage and rotate step-' by-step a ratchetwheel 7 having an attached worm 8 which engages a'worm wheel 9 on the shaft 10. At its upper'portion the shaft 10 carries a worm 11 in mesh with a worm wheel 12 which operates the warper clock or measuring device comprising a 41-40 which is pivotally connected at 5 the 1 scroll or worm 13 provided with a slot 14. v

The parts so far described, as well as the 'finger '15, weight 16, the arm 17 notched at18 to engage the roll 19 on the vibrator 20, the latch 21 mounted on the rockerv arm I .4 and having the laterally extending toe 22 adapted to enter between the shipper rod 23' and the knock ofl lever 24, when the measuring device. indicates thatthe predetermined length of warp has been wound upon the beam and the machine is to be stopped automatically, may all be substantially the same as shown andidescribed in the patents to Rhoades, No. 624,541, May 9, 1899, or No. 756,800, April 5, 1904, or they may be ofany desired construction, the essentials in these respects being that the measuring device shall measure the length of war-p'wound upon the warp beam and j cured to the driving roll shaft 26, the construction being such that i as the driving roll is rotated, as usual from any convenient source of power well understood by those skilled in the art, the shaft '3 will be rocked and through the means described the warper clock or warp measuring means will be operated from the warp driving roll;

" and when the warp measuring means indicates that desired predetermined length of 'warp has been wound upon the beam, the

machine will be stopped.

lhe warp beam 'may be of any des red construction, but in the present instance, -is

shown as formed of a barrel or drum 3O pro-i vided with the heads 31. lhe journals 32 of the warp'beam are carried by the arms' 33 pivotally connected to the machine frame, as usual, suitable weights 34 being connected to the arms to cause the thread mass 35 wound upon the beam to be held in contact with the driving surface of the driving roll 27.

From the construction described, it will be noted that the warp measuring means is positively driven from the warp beam driving roll; and if the surface speeds of the warp beam driving roll and they wound mass of yarn or thread upon the beam remains the same throughout the winding operation, in other words, if there is no slip between the driving surface'of the warp beam driving roll and the surface of the warp wound upon the beam, the measuring device will,

at the completion of the warping operation, accurately indicate the length of warp wound upon the beam.

To insure such uniform surface speed of I the warp beam driving roll and warp wound upon the beam, the present invention aims to utilize the relative yielding character of p the thread mass upon the beam to prevent any relative slip between the surface of the warp beam driving roll and the thread mass upon the beam by providing the cylindrical driving surface of the roll with projecting portions to engage the relatively yielding surface of the thread mass upon the beam and sink'thereinto without injurious effect upon the warp threads.

beam driving roll and producing between such grooved portions, ribs or projections, the construction being such that the ,relatively yielding thread mass upon the warp beam will, under the weight of the warp beam and its load, sink into the grooved portions of the driving roll and produce, in effeet, a positive driving connection between the surface of the driving roll and the wound mass of warp threads, with the result that as the measuring means is positively driven from the warp beam driving roll and the warp beam is driven without slip from the same driving roll, the length of warp indicated by the measuring means as wound upon the warp beam at the end of a Warping operatidn, will be the same as the actual length of warp wound thereon.

In Fig. 2 of the drawings-the grooved portions in the driving surface of the warp beam driving roll are indicated at 36 and the projecting portions 37 which sink into the thread mass upon the warp beam extend longitudinally of the warp beam driving roll between the grooves 36. In order that the Warp threads may not be injuriously affected by the longitudinal projecting portions 37 on the driving surface of the warp beam driving roll, the edges of said projecting portions are rounded, as indicated at 38,

Fig. 2.

During the first part of the warping operation, the weight of the warp beam and its load will, of course, be relatively light, and the density of the thread mass during the first layers of windings will be relatively dense, so that at such time the projecting portions or ribs 37 on the surface of the warp beam driving roll will indent themselves less into the threadmass than they will when the thread mass has become relatively large upon the beam; but during the first part of the warping operation, owing to the relatively light weight of the warp beam and its load, the indentations into the thread mass made by the projections or ribs 37 will be sufficient to insure a positive drive between the warp beam driving roll and thread mass, and as the warp load increases upon the beam and in consequence the beam and its load becomes heavier, the yielding it i beam will correspond't'o'that indicated by the measuring means.

What is claimed is :,I

1.- In a warping machine for winding warp yarn upon a beam, the combination of warp measuring means, a warp beam driving and supporting roll for sustaining and rotating the warp beam and its load and having a driving surface formed with portions to engage and sink into the yarn mass on the beam and insure that the beam load shall be driven at the same surface speed as that of the driving roll, and connections between the Warp beam driving roll and measuring means for operating the latter from the former to insure that the measured length of yarn on the beam as indicated by the warp measuring means shall be the same as the actual length wound thereon.

2. In a warping machine for winding warp yarn upon a beam, the combination of warp measuring means, a warp beam driving and supporting roll for engaging the warp woundupon the warp beam and supporting the weight of the warp beam and its yarn-load, said warp beam drivingroll having a driving surface provided with rounded projecting portions to non-injuriously engage and sink into the yarn on the warp beam and'preventslip between the driving roll and Warp beam load, connections between the warp beam driving and supporting roll and the warp measuring means for operating the latter from the former, and stopping means for stopping the machine when the predetermined length of yarn has been wound upon the beam.

In testimony whereof, I have signed my name to this specification, in the'presence of two subscribing witnesses.

LOUIS A. AUMANN.

Witnesses:

J M. ARNOLD, i HEMAN Rn'rnn. 

